rpi4 omv6 Is there a wiki for rsync settings to another nas qnap ?

One way to do that is to create an rsync server in QNAP. I know it can be done but you will have to refer to the QNAP documentation to do it. So you just have to create an rsync task in the OMV WebUI.

In point 5 of this guide you have an example of configuring rsync in OMV. It is configured in pull mode but it will help you to understand the process. It's simple.

Thema

[How to] Remote server backup with Wireguard (VPN) + Rsync

Configuration of two remote servers with a Point-to-Point Wireguard connection, and backup configuration with Rsync through the Wireguard tunnel.

• It is assumed that the user has already configured their OMV system and has SSH access on both servers. In one of the servers you have a domain configured that points to the public IP of the server. It is advisable to have access to the remote server, for example a Wireguard tunnel that provides access to your network.
  • To configure OMV see the New User

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chente

17. November 2021

Here you can also find information about rsync and its configuration.

https://wiki.omv-extras.org/doku.php?id=start

If you need to go deeper, you can find a lot of information here.

https://rsync.samba.org/

If you still have questions about using rsync in OMV feel free to ask here.

Are both machines on the same local network?

This link is for a remote/pull Rsync job, But it is between two OMV servers. I have no idea how to set the QNAP up, but this may get you started.